/*
 * Copyright (c) 2020  STMicroelectronics – All rights reserved
 * The STMicroelectronics corporate logo is a trademark of STMicroelectronics
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this list of conditions
 * and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided
 * with the distribution.
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 * - Neither the name nor trademarks of STMicroelectronics International N.V. nor any other
 * STMicroelectronics company nor the names of its contributors may be used to endorse or
 * promote products derived from this software without specific prior written permission.
 *
 * - All of the icons, pictures, logos and other images that are provided with the source code
 * in a directory whose title begins with st_images may only be used for internal purposes and
 * shall not be redistributed to any third party or modified in any way.
 *
 * - Any redistributions in binary form shall not include the capability to display any of the
 * icons, pictures, logos and other images that are provided with the source code in a directory
 * whose title begins with st_images.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
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package com.st.STWINBoard_Gui

import android.content.ContentResolver
import android.net.Uri
import android.util.Log
import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.st.BlueSTSDK.Features.highSpeedDataLog.FeatureHSDataLogConfig
import com.st.BlueSTSDK.Features.highSpeedDataLog.communication.DeviceModel.Sensor
import com.st.BlueSTSDK.Features.highSpeedDataLog.communication.DeviceModel.SensorType
import com.st.BlueSTSDK.Features.highSpeedDataLog.communication.DeviceModel.SubSensorDescriptor
import com.st.BlueSTSDK.Features.highSpeedDataLog.communication.HSDSetMLCSensorCmd
import com.st.BlueSTSDK.Features.highSpeedDataLog.communication.HSDSetSTREDLSensorCmd
import com.st.BlueSTSDK.Features.highSpeedDataLog.communication.MLCConfigParam
import com.st.BlueSTSDK.Features.highSpeedDataLog.communication.STREDLConfigParam
import com.st.BlueSTSDK.Node
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import java.io.FileNotFoundException
import java.io.IOError

internal class HSDLoadUCFViewModel : ViewModel(){

    private val _error = MutableLiveData<IOConfError>(null)
    val error: LiveData<IOConfError?>
        get() = _error

    private val _isLoading = MutableLiveData(false)
    val isLoading:LiveData<Boolean>
        get() = _isLoading

    private var mHSDConfigFeature: FeatureHSDataLogConfig? =null
    private var mSensorId = -1
    private var mSubSensorId = -1
    private var mSensorType = SensorType.Unknown

    fun openLoadUCF(sensor: Sensor, subSensor: SubSensorDescriptor){
        Log.d("ConfigVM","onSubSensorEnableChange ${sensor.id} -> ${subSensor.id} -> openMLCConf")
        mSensorId = sensor.id
        mSubSensorId = subSensor.id
        mSensorType = subSensor.sensorType
    }

    fun attachTo(node: Node){
        mHSDConfigFeature=node.getFeature(FeatureHSDataLogConfig::class.java)
    }

    fun loadUCFFromFile(file: Uri?, contentResolver: ContentResolver){
        if(file == null){
            _error.postValue(IOConfError.InvalidFile)
            return
        }

        viewModelScope.launch(Dispatchers.IO) {
            try {
                _isLoading.postValue(true)
                val stream = contentResolver.openInputStream(file)
                if(stream==null){
                    _isLoading.postValue(false)
                    _error.postValue(IOConfError.ImpossibleReadFile)
                    return@launch
                }
                val fullSize = stream.readBytes().toString(Charsets.UTF_8)
                stream.close()
                if(mSensorType == SensorType.MLC){
                    val paramList = listOf(MLCConfigParam.fromUCFString(mSubSensorId,fullSize))
                    mHSDConfigFeature?.sendSetCmd(
                            HSDSetMLCSensorCmd(mSensorId,paramList),
                            Runnable {
                                Log.d("MLC","LoadComplete")
                                _isLoading.postValue(false) }
                    )
                } else if(mSensorType == SensorType.STREDL){
                    val paramList = listOf(STREDLConfigParam.fromUCFString(mSubSensorId,fullSize))
                    mHSDConfigFeature?.sendSetCmd(
                            HSDSetSTREDLSensorCmd(mSensorId,paramList),
                            Runnable {
                                Log.d("STREDL","LoadComplete")
                                _isLoading.postValue(false) }
                    )
                }
            }catch (e: FileNotFoundException){
                e.printStackTrace()
                _isLoading.postValue(false)
                _error.postValue(IOConfError.FileNotFound)
            }catch (e: IOError){
                e.printStackTrace()
                _isLoading.postValue(false)
                _error.postValue(IOConfError.ImpossibleReadFile)
            }
        }
    }


}